Complete X number of items in a Program

We need a way to track employees who complete 4 wellness classes in a year. Right now, we have to do some fancy reporting to track it but we'd prefer to put all the wellness classes in a program, assign it to the participants, and set it so that users only need to complete 4 of them to be marked complete. This would make our reporting much easier and make it simple for employees to see their status at-a-glance.